Churn



UNITED sTATEs PATENT oEEIoE.

LOOMIS LAMB, OF BERLIN, CONNECTICUT.

i cHUEN.

Specification of Letters Patent N o. 15,661, dated September 2, 1856.

To all whom t may concern Be it known that I, LooMIs LAMB, of Berlin, in the county of Hartford and State of Connecticut, have invented an Improved Churn; and I do hereby declare that the same is fully described and represented in the following specification and the accompanying drawings, of which- Figure l, exhibits a side elevation of the said churn; Fig. 2, a central vertical and transverse section of the same. Fig. 3, a horizontal section of it.

In these drawings A, represents t-he tub or cream reservoir of the churn, the same having a vertical shaft or spindle B, extending through the middle of it and the cover C, and resting and turning on a bearing pivot fr, fastened to and projecting above the middle of the bottom of the tub. On the lower part of said shaft there is fixed a propeller or dasher D, formed of four blades or wings Z), o, Z9, Z2, radiating from a hub c, and each arranged so as to stand at an angle of about 45, to the plane` o-f the bottom of the tub. Above the said dasher, there is another or auxiliary dasher E, made essentially like the dasher D, and so applied to the upright shaft as to be capable of freely ,rotating thereon, or of allowing the shaft to revolve around in the hub e, of said auxiliary dasher.

Each of the wings f, of the auxiliary dasher is inclined to the plane of the bottom of the tub at about the same or a greater an-V gle, `as is each of the vanes of the fixed dasher with respect to said bottom.

F rom the inner surface of the tub and on a level with the auxiliary dasher, and so as to prevent said auxiliary dasher from being entirely revolved within the tub, there extends a projection G, it being constructed so as to allow both dashers to be raised upward, and with their shaft be withdrawn from the hub as occasion may require. Under this state of things, when the dashers are placed within the tub and the shaft is put in revolution, some one of the wings of the upper or auxiliary dasher will be carried against the stop G, which will arrest the further rotary motion of said dasher, or cause it to be stationary while the main dasher with its shaft-is kept in revolution. The peculiar arrangement of each wing of the revolving dasher D, in connection with that of each wing of the stationary or auxiliary dasher, causes liquid when in the vessel or tub A, and the dasher D, is in rotation, to be thrown against the wing of the upper dasher and reflected or turned over into the path of the next approaching wing of the revolving dasher, the same serving to stir up the cream to great advantage and thereby facilitate the production of butter.

By applying the auxiliary dasher to the shaft in manner` as described, and placing a stop or projection on the inner surface of the tub and to arrest the motion of the auxiliary dasher as specified, enables the two dashers to be simultaneously removed from the tub A, for the purpose of cleansing or repairing them whenever such may be necessary.

I am aware that it is not new for a churn to be made so, as to have two revoluble dashers, applied respectively to concentric shafts, each of which has a beveled pinion to be operated by a gear turned by `a winch. In

this case, the two dashers on their respective shafts are revolved in opposite directions, when the churn is in operation. In my improved churn, only one dasher is revoluble, and only one shaft is employed. I thus dispense with a tubular shaft, and the gearing necessary to operate it, and thereby simplify the machine, as in order to operate it only one shaft is required to be put in revolution. Therefore I do not claim employing in a tub. two concentric shafts separately provided with one 'or more dashers to revolve with them, but

What I do claim is- 1. My improvement of applying the auxiliary dasher to the shaft of the rotary dasher without any other shaft, and so that the shaft of the rotary dasher may revolve in the hub of the auxiliary dasher.

2. In combination with applying to the inside surface of the tub, a stop or projection or equivalent means, arranged as described, and by which the auxiliary dasher may be stopped from revolving with the other dasher when both are placed in the cistern, and the churn is in operation as specified.

In testimony whereof I have hereunto set my signature this 18th day of June A. D. 1856.

LOOMIS LAMB. [L s] 

